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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 22 — Nov. 15, 2012
  • pp: 4759–4761

Multicorelike guidance in a triangular-core hollow optical fiber and spectral evolution of its eigenmode degeneracy

Sejin Lee, Woosung Ha, Jens Kobelke, Kay Schuster, Sonja Unger, and Kyunghwan Oh  »View Author Affiliations


Optics Letters, Vol. 37, Issue 22, pp. 4759-4761 (2012)
http://dx.doi.org/10.1364/OL.37.004759


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Abstract

A unique multicorelike guidance was achieved in a microstructured optical fiber composed of a circular air hole at the center surrounded by a high-index triangular core. Unique spectral evolution of the degeneracy was theoretically investigated using a vectorial finite element method to find a threefold degeneracy in both the fundamental and the first excited modes in the visible range, which evolved to twofold degeneracy as the wavelength increased to IR. Experimental measurements also confirmed evolution of the modal intensity from three spatially isolated patterns confined to individual corners into a supermode combining the three corners.

© 2012 Optical Society of America

OCIS Codes
(060.2270) Fiber optics and optical communications : Fiber characterization
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2310) Fiber optics and optical communications : Fiber optics
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: August 3, 2012
Revised Manuscript: October 12, 2012
Manuscript Accepted: October 12, 2012
Published: November 14, 2012

Citation
Sejin Lee, Woosung Ha, Jens Kobelke, Kay Schuster, Sonja Unger, and Kyunghwan Oh, "Multicorelike guidance in a triangular-core hollow optical fiber and spectral evolution of its eigenmode degeneracy," Opt. Lett. 37, 4759-4761 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-22-4759


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